Java Code Examples for org.springframework.web.filter.ShallowEtagHeaderFilter#disableContentCaching()

The following examples show how to use org.springframework.web.filter.ShallowEtagHeaderFilter#disableContentCaching() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.

Example 1

Source File: StreamingResponseBodyReturnValueHandler.java From spring-analysis-note with MIT License

5 votes

@Override
@SuppressWarnings("resource")
public void handleReturnValue(@Nullable Object returnValue, MethodParameter returnType,
		ModelAndViewContainer mavContainer, NativeWebRequest webRequest) throws Exception {

	if (returnValue == null) {
		mavContainer.setRequestHandled(true);
		return;
	}

	HttpServletResponse response = webRequest.getNativeResponse(HttpServletResponse.class);
	Assert.state(response != null, "No HttpServletResponse");
	ServerHttpResponse outputMessage = new ServletServerHttpResponse(response);

	if (returnValue instanceof ResponseEntity) {
		ResponseEntity<?> responseEntity = (ResponseEntity<?>) returnValue;
		response.setStatus(responseEntity.getStatusCodeValue());
		outputMessage.getHeaders().putAll(responseEntity.getHeaders());
		returnValue = responseEntity.getBody();
		if (returnValue == null) {
			mavContainer.setRequestHandled(true);
			outputMessage.flush();
			return;
		}
	}

	ServletRequest request = webRequest.getNativeRequest(ServletRequest.class);
	Assert.state(request != null, "No ServletRequest");
	ShallowEtagHeaderFilter.disableContentCaching(request);

	Assert.isInstanceOf(StreamingResponseBody.class, returnValue, "StreamingResponseBody expected");
	StreamingResponseBody streamingBody = (StreamingResponseBody) returnValue;

	Callable<Void> callable = new StreamingResponseBodyTask(outputMessage.getBody(), streamingBody);
	WebAsyncUtils.getAsyncManager(webRequest).startCallableProcessing(callable, mavContainer);
}

Example 2

Source File: ServletInvocableHandlerMethod.java From spring-analysis-note with MIT License

5 votes

private void disableContentCachingIfNecessary(ServletWebRequest webRequest) {
	if (!isRequestNotModified(webRequest)) {
		HttpServletResponse response = webRequest.getNativeResponse(HttpServletResponse.class);
		Assert.notNull(response, "Expected HttpServletResponse");
		if (StringUtils.hasText(response.getHeader(HttpHeaders.ETAG))) {
			HttpServletRequest request = webRequest.getNativeRequest(HttpServletRequest.class);
			Assert.notNull(request, "Expected HttpServletRequest");
			ShallowEtagHeaderFilter.disableContentCaching(request);
		}
	}
}

Example 3

Source File: StreamingResponseBodyReturnValueHandler.java From java-technology-stack with MIT License

5 votes

@Override
@SuppressWarnings("resource")
public void handleReturnValue(@Nullable Object returnValue, MethodParameter returnType,
		ModelAndViewContainer mavContainer, NativeWebRequest webRequest) throws Exception {

	if (returnValue == null) {
		mavContainer.setRequestHandled(true);
		return;
	}

	HttpServletResponse response = webRequest.getNativeResponse(HttpServletResponse.class);
	Assert.state(response != null, "No HttpServletResponse");
	ServerHttpResponse outputMessage = new ServletServerHttpResponse(response);

	if (returnValue instanceof ResponseEntity) {
		ResponseEntity<?> responseEntity = (ResponseEntity<?>) returnValue;
		response.setStatus(responseEntity.getStatusCodeValue());
		outputMessage.getHeaders().putAll(responseEntity.getHeaders());
		returnValue = responseEntity.getBody();
		if (returnValue == null) {
			mavContainer.setRequestHandled(true);
			outputMessage.flush();
			return;
		}
	}

	ServletRequest request = webRequest.getNativeRequest(ServletRequest.class);
	Assert.state(request != null, "No ServletRequest");
	ShallowEtagHeaderFilter.disableContentCaching(request);

	Assert.isInstanceOf(StreamingResponseBody.class, returnValue, "StreamingResponseBody expected");
	StreamingResponseBody streamingBody = (StreamingResponseBody) returnValue;

	Callable<Void> callable = new StreamingResponseBodyTask(outputMessage.getBody(), streamingBody);
	WebAsyncUtils.getAsyncManager(webRequest).startCallableProcessing(callable, mavContainer);
}

Example 4

Source File: StreamingResponseBodyReturnValueHandler.java From lams with GNU General Public License v2.0

5 votes

@Override
public void handleReturnValue(Object returnValue, MethodParameter returnType,
		ModelAndViewContainer mavContainer, NativeWebRequest webRequest) throws Exception {

	if (returnValue == null) {
		mavContainer.setRequestHandled(true);
		return;
	}

	HttpServletResponse response = webRequest.getNativeResponse(HttpServletResponse.class);
	ServerHttpResponse outputMessage = new ServletServerHttpResponse(response);

	if (returnValue instanceof ResponseEntity) {
		ResponseEntity<?> responseEntity = (ResponseEntity<?>) returnValue;
		response.setStatus(responseEntity.getStatusCodeValue());
		outputMessage.getHeaders().putAll(responseEntity.getHeaders());
		returnValue = responseEntity.getBody();
		if (returnValue == null) {
			mavContainer.setRequestHandled(true);
			outputMessage.flush();
			return;
		}
	}

	ServletRequest request = webRequest.getNativeRequest(ServletRequest.class);
	ShallowEtagHeaderFilter.disableContentCaching(request);

	Assert.isInstanceOf(StreamingResponseBody.class, returnValue, "StreamingResponseBody expected");
	StreamingResponseBody streamingBody = (StreamingResponseBody) returnValue;

	Callable<Void> callable = new StreamingResponseBodyTask(outputMessage.getBody(), streamingBody);
	WebAsyncUtils.getAsyncManager(webRequest).startCallableProcessing(callable, mavContainer);
}

Example 5

Source File: StreamingResponseBodyReturnValueHandler.java From spring4-understanding with Apache License 2.0

5 votes

@Override
public void handleReturnValue(Object returnValue, MethodParameter returnType,
		ModelAndViewContainer mavContainer, NativeWebRequest webRequest) throws Exception {

	if (returnValue == null) {
		mavContainer.setRequestHandled(true);
		return;
	}

	HttpServletResponse response = webRequest.getNativeResponse(HttpServletResponse.class);
	ServerHttpResponse outputMessage = new ServletServerHttpResponse(response);

	if (ResponseEntity.class.isAssignableFrom(returnValue.getClass())) {
		ResponseEntity<?> responseEntity = (ResponseEntity<?>) returnValue;
		outputMessage.setStatusCode(responseEntity.getStatusCode());
		outputMessage.getHeaders().putAll(responseEntity.getHeaders());

		returnValue = responseEntity.getBody();
		if (returnValue == null) {
			mavContainer.setRequestHandled(true);
			return;
		}
	}

	ServletRequest request = webRequest.getNativeRequest(ServletRequest.class);
	ShallowEtagHeaderFilter.disableContentCaching(request);

	Assert.isInstanceOf(StreamingResponseBody.class, returnValue);
	StreamingResponseBody streamingBody = (StreamingResponseBody) returnValue;

	Callable<Void> callable = new StreamingResponseBodyTask(outputMessage.getBody(), streamingBody);
	WebAsyncUtils.getAsyncManager(webRequest).startCallableProcessing(callable, mavContainer);
}

Example 6

Source File: HttpEntityMethodProcessor.java From spring-analysis-note with MIT License

4 votes

@Override
public void handleReturnValue(@Nullable Object returnValue, MethodParameter returnType,
		ModelAndViewContainer mavContainer, NativeWebRequest webRequest) throws Exception {

	mavContainer.setRequestHandled(true);
	if (returnValue == null) {
		return;
	}

	ServletServerHttpRequest inputMessage = createInputMessage(webRequest);
	ServletServerHttpResponse outputMessage = createOutputMessage(webRequest);

	Assert.isInstanceOf(HttpEntity.class, returnValue);
	HttpEntity<?> responseEntity = (HttpEntity<?>) returnValue;

	HttpHeaders outputHeaders = outputMessage.getHeaders();
	HttpHeaders entityHeaders = responseEntity.getHeaders();
	if (!entityHeaders.isEmpty()) {
		entityHeaders.forEach((key, value) -> {
			if (HttpHeaders.VARY.equals(key) && outputHeaders.containsKey(HttpHeaders.VARY)) {
				List<String> values = getVaryRequestHeadersToAdd(outputHeaders, entityHeaders);
				if (!values.isEmpty()) {
					outputHeaders.setVary(values);
				}
			}
			else {
				outputHeaders.put(key, value);
			}
		});
	}

	if (responseEntity instanceof ResponseEntity) {
		int returnStatus = ((ResponseEntity<?>) responseEntity).getStatusCodeValue();
		outputMessage.getServletResponse().setStatus(returnStatus);
		if (returnStatus == 200) {
			if (SAFE_METHODS.contains(inputMessage.getMethod())
					&& isResourceNotModified(inputMessage, outputMessage)) {
				// Ensure headers are flushed, no body should be written.
				outputMessage.flush();
				ShallowEtagHeaderFilter.disableContentCaching(inputMessage.getServletRequest());
				// Skip call to converters, as they may update the body.
				return;
			}
		}
		else if (returnStatus / 100 == 3) {
			String location = outputHeaders.getFirst("location");
			if (location != null) {
				saveFlashAttributes(mavContainer, webRequest, location);
			}
		}
	}

	// Try even with null body. ResponseBodyAdvice could get involved.
	writeWithMessageConverters(responseEntity.getBody(), returnType, inputMessage, outputMessage);

	// Ensure headers are flushed even if no body was written.
	outputMessage.flush();
}

Example 7

Source File: ResponseBodyEmitterReturnValueHandler.java From spring-analysis-note with MIT License

4 votes

@Override
@SuppressWarnings("resource")
public void handleReturnValue(@Nullable Object returnValue, MethodParameter returnType,
		ModelAndViewContainer mavContainer, NativeWebRequest webRequest) throws Exception {

	if (returnValue == null) {
		mavContainer.setRequestHandled(true);
		return;
	}

	HttpServletResponse response = webRequest.getNativeResponse(HttpServletResponse.class);
	Assert.state(response != null, "No HttpServletResponse");
	ServerHttpResponse outputMessage = new ServletServerHttpResponse(response);

	if (returnValue instanceof ResponseEntity) {
		ResponseEntity<?> responseEntity = (ResponseEntity<?>) returnValue;
		response.setStatus(responseEntity.getStatusCodeValue());
		outputMessage.getHeaders().putAll(responseEntity.getHeaders());
		returnValue = responseEntity.getBody();
		returnType = returnType.nested();
		if (returnValue == null) {
			mavContainer.setRequestHandled(true);
			outputMessage.flush();
			return;
		}
	}

	ServletRequest request = webRequest.getNativeRequest(ServletRequest.class);
	Assert.state(request != null, "No ServletRequest");

	ResponseBodyEmitter emitter;
	if (returnValue instanceof ResponseBodyEmitter) {
		emitter = (ResponseBodyEmitter) returnValue;
	}
	else {
		emitter = this.reactiveHandler.handleValue(returnValue, returnType, mavContainer, webRequest);
		if (emitter == null) {
			// Not streaming: write headers without committing response..
			outputMessage.getHeaders().forEach((headerName, headerValues) -> {
				for (String headerValue : headerValues) {
					response.addHeader(headerName, headerValue);
				}
			});
			return;
		}
	}
	emitter.extendResponse(outputMessage);

	// At this point we know we're streaming..
	ShallowEtagHeaderFilter.disableContentCaching(request);

	// Wrap the response to ignore further header changes
	// Headers will be flushed at the first write
	outputMessage = new StreamingServletServerHttpResponse(outputMessage);

	DeferredResult<?> deferredResult = new DeferredResult<>(emitter.getTimeout());
	WebAsyncUtils.getAsyncManager(webRequest).startDeferredResultProcessing(deferredResult, mavContainer);

	HttpMessageConvertingHandler handler = new HttpMessageConvertingHandler(outputMessage, deferredResult);
	emitter.initialize(handler);
}

Example 8

Source File: AbstractHttpSockJsSession.java From spring-analysis-note with MIT License

4 votes

private void disableShallowEtagHeaderFilter(ServerHttpRequest request) {
	if (request instanceof ServletServerHttpRequest) {
		ServletRequest servletRequest = ((ServletServerHttpRequest) request).getServletRequest();
		ShallowEtagHeaderFilter.disableContentCaching(servletRequest);
	}
}

Example 9

Source File: ResponseBodyEmitterReturnValueHandler.java From java-technology-stack with MIT License

4 votes

@Override
@SuppressWarnings("resource")
public void handleReturnValue(@Nullable Object returnValue, MethodParameter returnType,
		ModelAndViewContainer mavContainer, NativeWebRequest webRequest) throws Exception {

	if (returnValue == null) {
		mavContainer.setRequestHandled(true);
		return;
	}

	HttpServletResponse response = webRequest.getNativeResponse(HttpServletResponse.class);
	Assert.state(response != null, "No HttpServletResponse");
	ServerHttpResponse outputMessage = new ServletServerHttpResponse(response);

	if (returnValue instanceof ResponseEntity) {
		ResponseEntity<?> responseEntity = (ResponseEntity<?>) returnValue;
		response.setStatus(responseEntity.getStatusCodeValue());
		outputMessage.getHeaders().putAll(responseEntity.getHeaders());
		returnValue = responseEntity.getBody();
		returnType = returnType.nested();
		if (returnValue == null) {
			mavContainer.setRequestHandled(true);
			outputMessage.flush();
			return;
		}
	}

	ServletRequest request = webRequest.getNativeRequest(ServletRequest.class);
	Assert.state(request != null, "No ServletRequest");

	ResponseBodyEmitter emitter;
	if (returnValue instanceof ResponseBodyEmitter) {
		emitter = (ResponseBodyEmitter) returnValue;
	}
	else {
		emitter = this.reactiveHandler.handleValue(returnValue, returnType, mavContainer, webRequest);
		if (emitter == null) {
			// Not streaming: write headers without committing response..
			outputMessage.getHeaders().forEach((headerName, headerValues) -> {
				for (String headerValue : headerValues) {
					response.addHeader(headerName, headerValue);
				}
			});
			return;
		}
	}
	emitter.extendResponse(outputMessage);

	// At this point we know we're streaming..
	ShallowEtagHeaderFilter.disableContentCaching(request);

	// Commit the response and wrap to ignore further header changes
	outputMessage.getBody();
	outputMessage.flush();
	outputMessage = new StreamingServletServerHttpResponse(outputMessage);

	DeferredResult<?> deferredResult = new DeferredResult<>(emitter.getTimeout());
	WebAsyncUtils.getAsyncManager(webRequest).startDeferredResultProcessing(deferredResult, mavContainer);

	HttpMessageConvertingHandler handler = new HttpMessageConvertingHandler(outputMessage, deferredResult);
	emitter.initialize(handler);
}

Example 10

Source File: AbstractHttpSockJsSession.java From java-technology-stack with MIT License

4 votes

private void disableShallowEtagHeaderFilter(ServerHttpRequest request) {
	if (request instanceof ServletServerHttpRequest) {
		ServletRequest servletRequest = ((ServletServerHttpRequest) request).getServletRequest();
		ShallowEtagHeaderFilter.disableContentCaching(servletRequest);
	}
}

Example 11

Source File: ResponseBodyEmitterReturnValueHandler.java From lams with GNU General Public License v2.0

4 votes

@Override
public void handleReturnValue(Object returnValue, MethodParameter returnType,
		ModelAndViewContainer mavContainer, NativeWebRequest webRequest) throws Exception {

	if (returnValue == null) {
		mavContainer.setRequestHandled(true);
		return;
	}

	HttpServletResponse response = webRequest.getNativeResponse(HttpServletResponse.class);
	ServerHttpResponse outputMessage = new ServletServerHttpResponse(response);

	if (returnValue instanceof ResponseEntity) {
		ResponseEntity<?> responseEntity = (ResponseEntity<?>) returnValue;
		response.setStatus(responseEntity.getStatusCodeValue());
		outputMessage.getHeaders().putAll(responseEntity.getHeaders());
		returnValue = responseEntity.getBody();
		if (returnValue == null) {
			mavContainer.setRequestHandled(true);
			outputMessage.flush();
			return;
		}
	}

	ServletRequest request = webRequest.getNativeRequest(ServletRequest.class);
	ShallowEtagHeaderFilter.disableContentCaching(request);

	ResponseBodyEmitterAdapter adapter = getAdapterFor(returnValue.getClass());
	if (adapter == null) {
		throw new IllegalStateException(
				"Could not find ResponseBodyEmitterAdapter for return value type: " + returnValue.getClass());
	}
	ResponseBodyEmitter emitter = adapter.adaptToEmitter(returnValue, outputMessage);
	emitter.extendResponse(outputMessage);

	// Commit the response and wrap to ignore further header changes
	outputMessage.getBody();
	outputMessage.flush();
	outputMessage = new StreamingServletServerHttpResponse(outputMessage);

	DeferredResult<?> deferredResult = new DeferredResult<Object>(emitter.getTimeout());
	WebAsyncUtils.getAsyncManager(webRequest).startDeferredResultProcessing(deferredResult, mavContainer);

	HttpMessageConvertingHandler handler = new HttpMessageConvertingHandler(outputMessage, deferredResult);
	emitter.initialize(handler);
}

Example 12

Source File: ResponseBodyEmitterReturnValueHandler.java From spring4-understanding with Apache License 2.0

4 votes

@Override
public void handleReturnValue(Object returnValue, MethodParameter returnType,
		ModelAndViewContainer mavContainer, NativeWebRequest webRequest) throws Exception {

	if (returnValue == null) {
		mavContainer.setRequestHandled(true);
		return;
	}

	HttpServletResponse response = webRequest.getNativeResponse(HttpServletResponse.class);
	ServerHttpResponse outputMessage = new ServletServerHttpResponse(response);

	if (ResponseEntity.class.isAssignableFrom(returnValue.getClass())) {
		ResponseEntity<?> responseEntity = (ResponseEntity<?>) returnValue;
		outputMessage.setStatusCode(responseEntity.getStatusCode());
		outputMessage.getHeaders().putAll(responseEntity.getHeaders());
		returnValue = responseEntity.getBody();
		if (returnValue == null) {
			mavContainer.setRequestHandled(true);
			return;
		}
	}

	ServletRequest request = webRequest.getNativeRequest(ServletRequest.class);
	ShallowEtagHeaderFilter.disableContentCaching(request);

	Assert.isInstanceOf(ResponseBodyEmitter.class, returnValue);
	ResponseBodyEmitter emitter = (ResponseBodyEmitter) returnValue;
	emitter.extendResponse(outputMessage);

	// Commit the response and wrap to ignore further header changes
	outputMessage.getBody();
	outputMessage.flush();
	outputMessage = new StreamingServletServerHttpResponse(outputMessage);

	DeferredResult<?> deferredResult = new DeferredResult<Object>(emitter.getTimeout());
	WebAsyncUtils.getAsyncManager(webRequest).startDeferredResultProcessing(deferredResult, mavContainer);

	HttpMessageConvertingHandler handler = new HttpMessageConvertingHandler(outputMessage, deferredResult);
	emitter.initialize(handler);
}

Example 13

Source File: AbstractHttpSockJsSession.java From spring4-understanding with Apache License 2.0

4 votes

private void disableShallowEtagHeaderFilter(ServerHttpRequest request) {
	if (request instanceof ServletServerHttpRequest) {
		ServletRequest servletRequest = ((ServletServerHttpRequest) request).getServletRequest();
		ShallowEtagHeaderFilter.disableContentCaching(servletRequest);
	}
}